scholarly journals Cyclic phosphonium ionic liquids

2014 ◽  
Vol 10 ◽  
pp. 271-275 ◽  
Author(s):  
Sharon I Lall-Ramnarine ◽  
Joshua A Mukhlall ◽  
James F Wishart ◽  
Robert R Engel ◽  
Alicia R Romeo ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Diffusion Coefficients ◽  
Synthesis And Characterization ◽  
Novel Materials ◽  
Self Diffusion ◽  
Phosphonium Ionic Liquids ◽  
Phosphonium Cations

Ionic liquids (ILs) incorporating cyclic phosphonium cations are a novel category of materials. We report here on the synthesis and characterization of four new cyclic phosphonium bis(trifluoromethylsulfonyl)amide ILs with aliphatic and aromatic pendant groups. In addition to the syntheses of these novel materials, we report on a comparison of their properties with their ammonium congeners. These exemplars are slightly less conductive and have slightly smaller self-diffusion coefficients than their cyclic ammonium congeners.

Two phosphonium ionic liquids with high Li+ transport number

2015 ◽  
Vol 17 (35) ◽  
pp. 23041-23051 ◽  
Author(s):  
Vitor L. Martins ◽  
Nédher Sanchez-Ramirez ◽  
Mauro C. C. Ribeiro ◽  
Roberto M. Torresi
Keyword(s):  
Ionic Liquids ◽  
Transport Number ◽  
Physicochemical Characterization ◽  
Phosphonium Ionic Liquids ◽  
Phosphonium Cations

This work presents the physicochemical characterization of two ionic liquids (ILs) with small phosphonium cations, triethylpenthylphosphonium bis(trifluoromethanesulfonyl)imide ([P2225][Tf2N]) and (2-methoxyethyl)trimethylphosphonium bis(trifluoromethanesulfonyl)imide ([P222(201)][Tf2N]), and their mixtures with Li+.

Synthesis and characterization of fluorinated phosphonium ionic liquids

2007 ◽  
Vol 85 (10) ◽  
pp. 660-667 ◽  
Author(s):  
Jocelyn J Tindale ◽  
Chris Na ◽  
Michael C Jennings ◽  
Paul J Ragogna
Keyword(s):  
Thermal Decomposition ◽  
Ionic Liquids ◽  
Melting Point ◽  
Synthesis And Characterization ◽  
High Melting ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multinuclear Nmr Spectroscopy ◽  
Phosphonium Ionic Liquids

A wide variety of phosphonium ionic liquids containing fluorous ponytails Rfn (Rfn = –(CF2)n–1CF3; n = 4, 6, 10) are synthesized by the reaction of Rfn-(CH2)2-I with trialkylphosphines (R3P; R = Me, nBu, nOct). The efficacy of multiple metathetical routes to anion exchange have been investigated, thus the corresponding BF4–, PF6–, tosylate (OTs–) and triflate (OTf–) derivatives have also been prepared. All compounds have been comprehensively characterized by multinuclear NMR spectroscopy, ESI-MS, DSC, and TGA/SDTA, and in the case of [Me3PCH2CH2Rf4][I] by single crystal X-ray diffraction. These materials range from high melting solids (e.g., [Me3P(CH2)2Rf4][I] Tm = 195 °C) to very low melting liquids (e.g., [nOct3P(CH2)2Rf4][OTf] Tg = –64 °C), and they all have high thermal decomposition points (295 to 394 °C). Incorporation of the more weakly coordinating BF4– and PF6– yielded a significant increase in the melting point of the materials, in contrast to OTf– and OTs– derivatives, which all exhibited significantly depressed melting points.Key words: phosphonium ionic liquids, alternative solvents, fluorine, phosphorus, fluorous ponytails.

scholarly journals Synthesis and Characterization of Alkali Lignin-based Hydrogels from Ionic Liquids

BioResources ◽  
2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Xingxiang Ji ◽  
Zhili Zhang ◽  
Jiachuan Chen ◽  
Guihua Yang ◽  
Honglei Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Synthesis And Characterization ◽  
Alkali Lignin

Characterization of Polymer Inclusion Membranes (PIMs) Containing Phosphonium Ionic Liquids as Zn(II) Carriers

2018 ◽  
Vol 57 (14) ◽  
pp. 5070-5082 ◽  
Author(s):  
Monika Baczyńska ◽  
Michał Waszak ◽  
Marek Nowicki ◽  
Dawid Prządka ◽  
Sławomir Borysiak ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Phosphonium Ionic Liquids

scholarly journals Synthesis and characterization of chiral ionic liquids based on quinine, l-proline and l-valine for enantiomeric recognition

2019 ◽  
Vol 283 ◽  
pp. 410-416 ◽  
Author(s):  
Tânia E. Sintra ◽  
Mikhail G. Gantman ◽  
Sónia P.M. Ventura ◽  
João A.P. Coutinho ◽  
Peter Wasserscheid ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Synthesis And Characterization ◽  
Chiral Ionic Liquids ◽  
Enantiomeric Recognition

Synthesis and characterization of diimidazole-based hexafluorophosphate ionic liquids

2020 ◽  
Vol 320 ◽  
pp. 114465
Author(s):  
Ting Huang ◽  
Wen Zhao ◽  
Xiaohua Zhang ◽  
Xuliang Nie ◽  
Jing Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Synthesis And Characterization

Synthesis and Characterization of Polymerized Ionic Liquids: Mechanical and Thermal Properties of a Novel Type of Hydrogels

2014 ◽  
Vol 215 (8) ◽  
pp. 716-724 ◽  
Author(s):  
Jenny Bandomir ◽  
André Schulz ◽  
Satomi Taguchi ◽  
Lena Schmitt ◽  
Hiroyuki Ohno ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Thermal Properties ◽  
Synthesis And Characterization ◽  
Mechanical And Thermal Properties
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